Cylindrical roller bearing used for rolling mill

Abstract

The invention discloses a cylindrical roller bearing used for a rolling mill. The cylindrical roller bearing comprises cylindrical rollers, an outer ring and an inner ring, wherein one end of each cylindrical roller adopts a flat surface end, the other end of each cylindrical roller adopts a spherical surface end, and the two cylindrical rollers are in butt joint to form a roller set; a first roller path is formed in the inner side surface of the outer ring, and smooth and arc-shaped groove structures are arranged on the two sides of the first roller path; a second roller path is formed in the outer side surface of the inner ring, smooth and arc-shaped groove structures are arranged on the two sides of the second roller, and the cylindrical rollers are arranged between the first roller and the second roller in a rolling manner. According to the cylindrical roller bearing provided by the invention, the smooth and arc-shaped groove structures are designed in the positions of two end edges of the bottom walls of the roller paths, and the end parts of the cylindrical rollers are in surface contact with edge parts of the roller paths, so that pressure distribution is even, stress can be lowered to a greater extend, and the problem of high probability of damage on a bearing in the prior art can be solved. In addition, a holder for a traditional bearing can be removed, so that the probability of the damage of the bearing can be lowered.

Description

technical field [0001] The invention relates to the technical field of bearings, in particular to a cylindrical roller bearing for rolling mills. Background technique [0002] With the rapid development of my country's industry, steel rolling enterprises have also developed accordingly, and their requirements for equipment are also constantly improving. Bearings are important components in steel rolling production equipment. [0003] At present, the typical FC structure four-row cylindrical roller bearing installed and used by steel rolling enterprises on the hot strip rolling mill production line adopts a structure with a middle baffle and two oil grooves, which is likely to cause stress concentration, which will cause cracks in the ferrule and cause damage to parts. Fracture reduces the service life of the bearing. At the same time, the intermediate gear ring affects the length of the rollers, reducing the rated dynamic load value of the bearing and the bearing capacity of...

AI Technical Summary

Problems solved by technology

[0003] At present, the typical FC structure four-row cylindrical roller bearing installed and used by steel rolling enterprises on the hot strip rolling mill production line adopts a structure with a middle baffle and two oil grooves, which is likely to cause stress concentration, which will cause cracks in the ferrule and cause damage to parts. Fracture reduces the service life of the bearing. At the same time, the intermediate gear ring affects the length of the rollers, which reduces the rated dynamic load value of the bearing and the bearing capacity of the bearing. When the axial direction has a certain relative displacement, the bearing cannot operate normally

[0004] In addition, in the traditional roller bearing structure, the outer edge of the end face of the cylindrical roller set in the bearing is a right-angle outer edge, and stress concentration is likely to occur between the roller and the raceway after being compressed, and the roller will be broken. Collapse or deformation of the raceway will affect the normal operation of the bearing

[0005] To sum up, how to solve the problem that roller bearings in the traditional technology are prone to component damage due to stress concentration has become an urgent problem to be solved by those skilled in the art

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